| /* |
| |
| Copyright (c) 2001, Dr Martin Porter |
| Copyright (c) 2002, Richard Boulton |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| |
| * Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * Neither the name of the copyright holders nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE |
| FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| */ |
| |
| using Lucene.Net.Support; |
| using System; |
| using System.Diagnostics.CodeAnalysis; |
| using System.Reflection; |
| |
| namespace Lucene.Net.Tartarus.Snowball |
| { |
| /// <summary> |
| /// This is the rev 502 of the Snowball SVN trunk, |
| /// but modified: |
| /// made abstract and introduced abstract method stem to avoid expensive reflection in filter class. |
| /// refactored StringBuffers to StringBuilder |
| /// uses char[] as buffer instead of StringBuffer/StringBuilder |
| /// eq_s,eq_s_b,insert,replace_s take CharSequence like eq_v and eq_v_b |
| /// reflection calls (Lovins, etc) use EMPTY_ARGS/EMPTY_PARAMS |
| /// </summary> |
| public class Among |
| { |
| private readonly Type[] EMPTY_PARAMS = Arrays.Empty<Type>(); |
| |
| public Among(string s, int substring_i, int result, |
| string methodname, SnowballProgram methodobject) |
| { |
| this.s_size = s.Length; |
| this.s = s.ToCharArray(); |
| this.substring_i = substring_i; |
| this.result = result; |
| this.methodobject = methodobject; |
| if (methodname.Length == 0) |
| { |
| this.method = null; |
| } |
| else |
| { |
| try |
| { |
| this.method = methodobject.GetType().GetMethod(methodname, EMPTY_PARAMS); |
| } |
| catch (MissingMethodException e) |
| { |
| throw new Exception(e.ToString(), e); |
| } |
| } |
| } |
| |
| /// <summary>search string</summary> |
| public int Length => s_size; |
| |
| private readonly int s_size; |
| |
| /// <summary>search string</summary> |
| [WritableArray] |
| [SuppressMessage("Microsoft.Performance", "CA1819", Justification = "Lucene's design requires some writable array properties")] |
| public char[] S => s; |
| |
| private readonly char[] s; |
| |
| /// <summary>index to longest matching substring</summary> |
| public int SubstringIndex => substring_i; |
| |
| private readonly int substring_i; |
| |
| /// <summary>result of the lookup</summary> |
| public int Result => result; |
| |
| private readonly int result; |
| |
| /// <summary>method to use if substring matches</summary> |
| public MethodInfo Method => method; |
| |
| private readonly MethodInfo method; |
| |
| /// <summary>object to invoke method on</summary> |
| public SnowballProgram MethodObject => methodobject; |
| |
| private readonly SnowballProgram methodobject; |
| } |
| } |